:CMODe:UDEFined:BASe

Instrument:
N1000A
Flex Apps:
FlexDCA
Meas. mode:
TDR
Waveform type:
T-Parameter
:CMODe Commands

Command Syntax

:CMODe{1:8}{A|C}:UDEFined:BASe <amplitude>

<amplitude> is a double.

Where the required specifier {1:8}{A|C} identifies the common-mode channel by its module slot and channel letter. For example, the common-mode waveform of channels 1A and 1B would be identified as 1A.

The channel specifier will fail if it does not include a slot number. If instead the suffix's channel letter is missing, the command defaults to letter A. As a result, the best practice is to always explicitly specify the channel by including both the module slot number and channel letter.

Query Syntax

:CMODe{1:8}{A|C}:UDEFined:BASe?

TDR MEASUREMENTS AFFECTED

  • Fall Time
  • Rise Time
  • Δ Time
  • Time at Edge
  • Time at Amplitude

Description

For the indicated common-mode waveform, sets or queries the custom base-level setting. The top and base levels are used to locate a waveform's lower, middle, and upper threshold levels during measurements. Specify the level in volts. Use :CMODe{1:4}:UDEFined:TOP to set or query a custom top level.

Before this custom base level can be applied to measurements, use the :MEASure:TBASe:METHod command to select custom top-base definitions.

Requires TDR/TDT mode. Requires FlexDCA revision A.04.00 and above.

Example Command Sequence

:MEASure:TBASe:METHod UDEFined
:CMODe1A:UDEFined:BASe -125E-3
:CMODe1A:UDEFined:TOP 125E-3